To cite package ‘kitagawa’ in publications use:

Barbour AJ (2025). kitagawa: Spectral Response of Water Wells to Harmonic Strain and Pressure Signals. R package version 3.1.3, https://github.com/abarbour/kitagawa.

Corresponding BibTeX entry:

  @Manual{,
    title = {kitagawa: Spectral Response of Water Wells to Harmonic
      Strain and Pressure Signals},
    author = {Andrew J. Barbour},
    year = {2025},
    note = {R package version 3.1.3},
    url = {https://github.com/abarbour/kitagawa},
  }